Casing for ventilating and air treating apparatus



A. SARGENT Oct. 19, 1937.

CASING FOR VENTILATING AND AIR TREATING APPARATUS 3 Sheets-Sheet 1Original Filed'May 10, 1933 INVENTOR 4.44570 SARGzF/VT BY- A RNEY Oct.19, 1937. A. SARGENT 2,096,596

CASING FOR VENTILATING AND AIR TREATING APPARATUS Original Filed May 10,1932 3 Sheets-Sheet 2 INVENTOR AL L6 701v SARGENT BY g RNEY

, 1932 3 Sheets-Sheet 5 Oct. 19, 1937. -A. S ARGENT CASING F ORVENTILATING AND AIR TREATING APPARATUS Original Filed May 10 Patentedoce'ie, 1937 CASING FOR VENTHIATING AND AIR TREATING APPARATUS AllstonSargent, Bronxvillc, N. Y., assignor to Campbell Metal WindowCorporation, New York, N. Y., a corporation of Maryland Originalapplication May 10, 1932, Serial No; 610,351. Divided and thisapplication January 13, 1934, .Serial No. 706,498

7 Claims.

in an eflicient unit structure which may be installed in a room orchamber, and which is provided with means, such as those disclosed andclaimed in Patent 1,949,379, granted February 27 1934 on my applicationfiled May 10, 1932, of which the present application is a division, formoving fresh air into the room or chamber from an outside source, andfor imparting desired characteristics of temperature to the air withinthe casing, for example, to heat the air or to reduce its temperature toa degree desired.

The primary object of the present invention is to provide a casingsuitable for the purposes specifled above, and characterized by featuresof construction and arrangement contributingto the mechanical simplicityand effectiveness of the casing construction, and to its production andinstallation at a relatively low cost, and to facility with which thecasing may be opened up and restored to its normal condition, wheneverthis becomes desirable, as for the inspection, repair or replacement ofapparatus within the casing.

The various features of novelty which charac- -terize the presentinvention are pointed out with particularity in the claims annexed toand forming a part of. this specification. For a better understanding ofthe invention, however, its advantages and specific objects obtainedwith its use, reference should be had to the accompanying drawings anddescriptive matter in which I have illustrated and described a preferredform of embodiment of the present invention.

Of the drawings:-- 1 Fig. 1 is a view in front elevation of thecompletecasing installed in connection with a window of a room to obtain asupply of fresh air from a space below the raised sash of the window;Fig. 2 is a top plan view of the construction shown in Fig. 1, certainfeatures of an adjacent wall and window being iii-horizontal section;

Fig. 3 is a view taken'similarly to Fig. 1 but on a larger scale andshowing a portion only of the prises features of construction andarrangement complete casing shown in Fig. 1 and with parts broken awayand shown in section to illustrate details or casing construction;

Fig. 4 is a vertical section on the line 44 of Fig. 1;

Fig. 5 is a section on the line 55 of Fig. 1;

Fig. 6 is a detail section on the line 6-6 of Fig. 1;

Fig. 7 is a detail section on the line or Fig. 4;

Fig. 8 is a detail in elevation of a damper operating device; and

Fig. 9 is a section taken similarly to Fig. 4 but on a larger scale andshowing a portion only of a filter screen part shown in Fig. 4.

In the accompanying drawings, l designates, generally, an enclosure orcabinet adapted to be I installed in the space to be ventilated,preferably adjacent an outer building wall A'beneath a sill B of awindow frame C and window sash D. The

, cabinet may be made of sheet metal and includes a rear vertical wall2, vertical end walls 3 and a horizontal top wall 4, said end and rearwalls rising from a base plate or board 5 which is adapted to rest onthe floor E of a room. The end walls are each provided with. an inwardlydirected edge flange 5 extending along the vertical and top edgeportions thereof, which flanges are provided with inset edge portions 1to which the top wall terminates about midway betwen the front and rearof the endpanels 3 as clearly shown in Fig. 2, and this front edge ofthe top wall 4 is provided with a down-set flange or lip 9 lying in thesame, plane as the top flanges I on the end walls. At the lower,-frontportion of the cabinet the flanges I are connected by a horizontal crosspiece or flange l0, lying in the same vertical plane as said flanges].

The front of the cabinet is closed by-a detachable vertical wall or"panel II, the lower edge .of which rests on the base piece 5 and theupper edge of which is provided with aninwardly directed wall member I!at an angle to the front wall, and preferably in a horizontal plane, thevertical side edges of the panel I I and the member I2 restingrespectively on the vertical and horizontal portions of the flanges I onthe end walls 3, and the inner transverse edge of the member l2 restingon the flange 9, when the front panel is assembled in place. The frontpanel is detachably held in position to close the front of the cabinetby means of inwardly directed clips l3 at the lower portion thereof,which set over the flange l0 (Figs. 4 and 5), and by means of a clampingscrew l4 passed through an opening in the inner edge of the member andthreaded into the flange 9. The

front panel may be readily removed by disengaging the screw l4, and thenlifting the panel vertically to disengage the clip members |3 from theflange I0, when it is desired to have access to the interior of thecabinet. As shown, the

interior of the cabinet is divided by a substantially vertical wall l5and a laterally offset wall l6 into two compartments l1 and I8, whichmay be used for purposes presently to be described, said walls |5 and 5extending from the horizontal wall 4 to the base wall5. The walls l5 and|6 extend from the rear wall 2 to the front edge portion of the cabinet,so that when the front panel member II is in place, the vertical andhorizontal portions thereof contact the vertical front edges of thewalls l5 and I6, and the top horizontal edge of the wall l5,respectively, to close the compartments l1 and I8 from each other.

At its rear portion the horizontal wall 4 is provided with an air inletduct, preferably in the form of a box or trunk l9, provided with arearwardly extending inlet duct or neck 28 projecting beyond the rearface of the inlet box IE! and adapted to overlie the window sill Badjacent to which the apparatus is installed. The duct or neck 20 istelescopically engaged, as at 2|, by a neck 22 of an inlet box extensionmember 23 having a forward open wall 24 provided with inlet louvres 25,the wall 24 having above its inlet opening a horizontal flange 26. Theconstruction is such that when the apparatus is located in place, theinlet box 23 may, by virtue of the telescoping connection 2|, beadjusted so that the flange 26 may be projected into a window openingand located beneath a window sash D, the latter being lowered onto saidflange 28 to seal the opening at this point. In order to adapt the inletto windows of varying widths, the transverse width of the inlet duct ispreferably less than the usual width of the windows, so that the airreceiving end of the duct can readily be located between the verticalside members of a window' frame, and beneath a raised window sash.

In order to seal the space between the sides of the member 23 and thevertical portion of a window frame, I provide the ends of the box 23with laterally extending, vertical channel-irons constituting flanges21, each of which carries a filler piece or plate 28 having a flange 29to abut the adjacent vertical face of the window frame. The fillerpieces 28 are horizontally adjustable with reference to the plates 21inorder to be adjusted to the width of the window, and for this purposehave horizontal slots 38 to' receive the shanks o1 clamping screws 3|carried by the plates 21 and adapted to receive clamping nuts 32 adaptedto clamp the filler pieces rigidly in adjusted position against theplates. The filler pieces are provided 1 with horizontal flanges 33,which form a substantial continuation of the upper horizontal flange ofthe channel-iron, and together therewith may receive a suitable packingupon which the sash rests when lowered into engagement with the flange28.

As shown, the inner end of the air inlet box 28 communicates through anopening 34 in the top wall 4, with the interior'of the compartment II,

but the interior of the air inlet box is closed ofl.

'by a forwardly curved baflle wall 35 from theining apertures in the endwalls of the box 20 at the top thereof, the damper plate being movableby'said shaft to take a position across the interior of theduct 28, asindicated in dotted lines in Fig. 5, to thereby shut ofi the supply ofair to compartment H, or to the position shown in full lines in Figs. 4and 5 to permit the air to enter compartment H. The damper is operatedby an extension of its pivot shaft which carries a crank arm 38 having aspring locking pin 39 to cooperate with spaced sockets in a quadrant 40mounted on the end of the box 20-.

The top wall |2 of the front panel member is provided with arectangularopening 4| overlying the compartment I1, and also with an opening 42overlying compartment l8, these openings constituting the air outletsfrom said compartments, as will be presently described. In each openingis seated a removable grill 43 having a surrounding flange 44 resting onthe wall I2 around its opening.

Within the compartment H in the arrangement shown, is an air impellingmeans preferably comprising a centrifugal blower fan 5 mounted in adouble-eyed casing 48, the outlet 41 of which connects with an upwardlyflaring discharge duct 48, the upper end of which rises to a pointclosely adjacent to the casing wall I2 and is substantially coextensivewith the outlet opening 4| therethrough. This centrifugal bloweroperates to draw fresh air up through the duct 48 and out through theopening 4| into the space containing the unit. The discharge duct 48 isrectangular in cross-section and made preferably of sheet metal, and thewalls thereof are covered externally, as

'is also the circumferential wall of the blower casing, with a layer 49of sound deadening and absorbing material such as acoustic felt,suitably attached thereto by cement. The inner surfaces of the duct 48are likewise covered with sound deadening and absorbing material 50cemented thereto and covered by a layer 5| of perforated leather,orother material, such as cribble cloth to prevent the air blast fromdislodging flber from the sound deadening material, and cemented inPlace, as at 5|. In duct 48 is a deflector plate 48' extendingtransversely thereof from front to rear, and which may be inclined asdisclosed in said Patent 1,949,379, and which acts to deflect ordistribute the air so that the discharge thereof will be equallydistributed over the area of outlet 4|. The sound deadening andabsorbing material described serves to absorb the sound waves propagatedthrough the inlet 34 to the compartment, and prevent external noisesentering the room through the outlet 4|.

Between the inlet 34 and the compartment I1, is an air filtering screen52, comprising a rectangular metallic frame 53 support ng a wire meshscreen 54 over which is laid and held a sheet of suitable air filteringmaterial such as 55, held in place by an overlying wire backing 56 (seeFigs. 7 and 9), hinged at ."lli to the frame, and at its free end havinga locking pin 58 to project through a slot 59 in the strip 59 and beengaged by a slotted holding latch 58" pivoted on said strip to therebydetachably hold the backing down over the material 55. The screen isslidably held in inclinecbchannel-guides 51, mounted, respectively, onthe wall l5 and the end wall 3 of the chamber H, the screen beinginserted in said channel-guides through a slot 58 in the wall 4, theupper edge member of the screen frame 53 being provided with'a closurefinishing means formed by the previously mentioned strip 58 without thepropagation of sound from external sources into the room, due to thefact that the sound waves are deadened and absorbed, in the chamber l7and by the construction of the outlet duct 48. It will be noted that thescreen 52 is of large area relative to the area of the inlet 34, so asto provide an extended filtering surface-to the incoming .air, andthereby reduce resistance to the air in being drawn by the impeller intothe compartment I1, and assure that the impeller will deliverefliciently an ample supply of fresh air through the outlet 4|.

In the compartment l8 in the arrangement shown is located apparatus forreceiving air from the interior of the room, treating such air, and

returning it to the room, with a desired cha'racteristic, for example,temperature, humidity etc. In order to supply the compartment l8 withair from the interior of the room, the front panel II is provided at itslower portion with horizontally disposed inlet louvres 8|, which forsymmetry extend entirely across the panel, but are closed by a plate 6|(shown in section in Fig. 4 and indicated by dotted lines in Fig. 1),adjacent the compartment I! so that air from the room cannot enter thelatter compartment. In the compartment I8 is a centrifugal fan blower62, mounted in a double-eyed blower casing 63 having an upwardlydirected outlet duct 64. This casing and duct are covered externallywith sound deadening material 65, such as acoustic felt, so .as todeaden sound which might emanate from any vibration of the fan and duct.The upper end of the duct 64 terminates preferably at a point below thehorizontal center of the compartment l8 and is so arranged as to deliverthe air upward toward the outlet 42 from the compartment.

In the arrangement shown, above the upper end of the outlet duct 84 isarranged a heat exchange unit 66 including vertically disposed headersconnected by transverse horizontal flow pipes 61,- upon which may bemounted vertically disposed fin members to provide a plurality ofvertical flues through which the air delivered by the blower flowsupwardly and has its tempera ture modified by the heat exchange element.The latter maybe either a heatvemitting elementto raise the temperatureof the air, or a cooling element in the low temperature side of arefrigerating system in order to lower the temperature of the air, butis shown as a heat radiator receiving steam through an inlet nipple 18and regulating valve II from a steam supply pipe 13, and discharging airand water of condensation into a return pipe I1. This valve Il may beprovided with a thermostatic cpntroller 12 subject to room temperature.

It will be understood that if the heat exchange element is to beemployed to reduce the temperature of the air in the room, and which isdriven through the compartment 18 by the impeller 62, the heat exchangeelement instead of being supplied with a heating fluid by the pipe 13,would be supplied with a refrigerant through said pipe,

and the refrigerant after cooling the heat exchange element would bereturned to the refrigerant source by means of the return pipe 11. Inthis case, the heat exchange element would abstract heat from the airpassing through the compartment l8, thereby coohng such air anddelivering it through the outlet 43, at a lower temperature into theroom, and thereby producing a cooling eflfect therein. The heat exchangeelement is supportedrigidly in the casing by means of horizontalstringers 88 rigidly connected in any suitable manner to thewall l5 andthe right hand-end wall 8, the headers of the element 66 being bolted,as at I l to said stringers. I When the heat exchange element is to beemployed for heating the air, the casing may enclose means for addingmoisture to the heated air to humidity the same, the means'shown' forthe purpose comprising a relatively narrow water holding receptacle ortank 82 arranged in the space between the pipes 61 of the heat radiatorand open at its top. The tank 82. is accessible for insertion andremoval when the casing member forming the front panel II and top panelI2 is removed. In use heat radiated by the element 66 vaporizes waterwithin the tank 82, and the vapor formed mixes with the air moved upwardthrough the compartment 18. Water may be supplied to the tank 82 asrequired to maintain a suitable water level therein through a supply Ipipe 86 and valve 8'! controlled by afloat 88 restof the rotor of an.electric motor 96 seated on the base board 5 and arranged in a recess 96or extension portion of the chamber l8 which the partition wall I6 isoffset to provide. This arrangement permits the motor to be located notonly in the path of the relatively cool air entering the lower openings6|, but also to be sufiiciently far away from the heat exchange element68 in r the chamber l8 as not to be deleteriously affected by the heatemitted therefrom.

Further references to the construction and arrangement of the air'movingand air treating means within the casing compartments l1 and I8 isunnecessary, as the specific form and character of those means form nopart of the present invention and are fully disclosed and claimed in myabove mentioned application, Serial No. 610,351, and have been referredto herein primarily only by way of illustration of an advantageous usewhich may be made of the features of casing construction and arrangementdisclosed and claimed herein. g

While in accordance with the provisions of the statutes,-I haveillustrated described the best form of embodiment of my invention nowknown to me, it will be apparent to those skilled in the apparatusdisclosed without departing from the spirit of my invention as set forthin the appended,- claims and that in some cases certain features of myinvention may be used to advantage without a corresponding use of otherfeatures.

Having now desc ribed my invention, what I claim as new and desire tosecure by- Letters Patent is:

1. A casing structure for housing ventilating and air treating apparatusand comprising a casing body adaptedto rest upon the floor and adjacenta vertical wall of a room and including and walls and a flrsttop wallportion connecting the end walls at the rear of the casing to form apartial closure for the top thereof, a second top wall portionconnecting the end walls at the front of the casing and joining thefirst top wall portion to close the remaining part of the casing top,and a front wall portion extending between, the end walls and closingthe front of the casing, said second top wall portion and said frontwall portion being secured together and removable from the casing as aunit to permit inspection of the interior .thereof, without disturbingthe relation of said casing body to said floor and vertical room wall.

2. A casing structure for housing ventilating and air treating apparatusand comprising a casing body adapted to rest upon the floor and adjacenta vertical wall of a room and including end walls and a first top wallportion connecting the end walls at the rear of the casing to form apartial closure for the top thereof, a second top wall portionconnecting the end walls at the front of the casing and joining thefirst top wall portion to close the remaining part of the casing top,said second top wall portion having an opening therein for the dischargeof air from the interior of the casing, a front wall portion extendingbetween the end walls and closing the front of the casing, said secondtop wall portion and said front wall portion being secured together andremovable from the casing as a unit to permit inspection of the interiorthereof, without disturbing the relation of said casing body to saidfloor and vertical room wall.

3. A casing structure for housing a ventilating and air treatingapparatus and comprising vertical end walls, a first top wall portionconnecting the end walls at the rear of the casing to form a partialclosure for the top thereof and being provided with a flange along itsforward edge, said end walls having inwardly directed flanges at thevertical and top edge portions thereof, a second top wall portionconnecting the end walls at the front of .the casing and joining thefirst top wall portion to close the remaining part of the casing top,the second-named top wall portion being supported along its side andrear edge portions by the flanges on the end walls and firstnamed topwall, respectively, and a. front wall portion extending between the endwalls to close the front of the casing and engaging the vertical flangeson said end walls, said second top wall portion and said front wallportion being secured together and removable from the casing as a unitto permit inspection of the interior thereof.

4. A casing structure for housing a ventilating and air treatingapparatus and comprising vertical end walls, a first top wall portionconnecting the end walls at the rear of the casing to form a partialclosure for the top thereof and being provided with a flange along itsforward edge, said end walls having inwardly directed flanges at thevertical and top edge portions thereof, a second top wall portionconnecting the end walls at the front of the casing and joining thefirst top wall portion to close the remaining part of the casing top,the second-named top wall portion being supported along its side andrear edge portions by the flanges on the end walls and flrst named topwall, respectively, a; front wall portion extending between the endwalls to close thefront of the casing and enga in the vertical flangeson said end walls, said second top wall portion and said front wallportion being secured together and removable from the casing as a unitto permit inspection of the interior thereof, and means for detachablysecuring said second top wall portion to said first top wall portion.

5. A casing structure for housing ventilating and air treating apparatusand comprising a casing body adapted to rest upon the floor and adjacenta vertical wall of a room and including end walls and a first top wallportion connecting the end walls at the rear of the casing to form apartial closure for the top thereof, a second top wall portionconnecting the end walls at the front of the casing and joining thefirst top wall portion to close the remaining part of the casing top, atransverse frame member connecting said end walls at the lower and frontportions thereof, a front wall portion extending between the end wallsand closing the front of the casing and engaging said transversemembensaid second top wall portion and said front wall portion beingsecured together and removable from the casing as a unit to permitinspection of the interior thereof, without disturbing the relation ofsaid casing body to said floor and vertical room wall.

6. A casing structure for'housing ventilating and air treating apparatusand comprising a casing body adapted to rest upon the floor and adjacenta vertical wall of a room and including end walls and a first top wallportion connecting the end walls at the rear of the casing to form apartial closure for the top thereof, a second top wall portionconnecting the end walls at the front of the casing and joining thefirst top wall portion to close the remaining part of the casing top, afront wall portion extending between the end walls and closing the frontof the casing;

said second top wall portion and said front wall lation of said casingbody to said floor and vertical room wall, a transversely extendingmember connecting said end walls at the lower portions ond top wallportion to said first top wall portion.

'7. A casing structure for housing ventilating and air treatingapparatus and comprising a casing body adapted to rest upon the floorand adjacent a vertical wall of a room and including end walls and afirst top wall portion connecting the end walls at the rear of thecasing to form a partial closure for the top thereof, a second top wallportion connecting the end walls at the front of' the casing and joiningthe first 'top wall portion to close the remaining part of the casingtop, a front wall portion extending between the end walls and closingthe front of the casing, said second top wall portion and said frontwall porengagement of the latter with said transversely extendin'gmember by vertical movement of said front wall portion, and means fordetachably securing said second top wall portion to said first top wall,portion. J

ALLSTON SARGENT.

